| 其他書名 | Hearings Before the Subcommittee on Science, Research, and Technology of the Committee on Science, Space, and Technology, U.S. House of Representatives, One Hundred First Congress, First Session, March 9, 14, 16, 1989 |
| 出版 | U.S. Government Printing Office, 1989 |
| URL | http://books.google.com.hk/books?id=IulsOXey2nAC&hl=&source=gbs_api |
| EBook | FULL_PUBLIC_DOMAIN |